AdDuplex have released their monthly report that shed some light on Windows Phone device. If you remember, the same agency released statistics last month that crowned Nokia Lumia 520 as the most popular Windows Phone device. The latest report also mentioned similar statistics with Nokia Lumia 520 capturing 27% of Windows Phone 8 market followed by Lumia 920 and Lumia 620 who managed to capture 17% and 14%, respectively. Even if we take into account the complete Windows Phone lineup, Lumia 520 still manages to capture 18 percent market share, with a whopping 36% followed by Lumia 720. The report also mentions that the majority of Windows Phone devices – 57 percent to be exact – that are being sold come with 512MB RAM, that may be classed as low-end.